Last Updated on April 5, 2025 by Caesar

When temperatures soar, few things are as frustrating as a broken air conditioner. Whether you’re a homeowner, a property manager, or a real estate investor, understanding the basics of AC repair can help you maintain your cooling system, extend its lifespan, and avoid costly breakdowns. 

This guide will walk you through the essentials of AC repair, common problems and solutions, and key maintenance practices to keep your cooling system in top shape. 

Why Is AC Repair Important? 

Air conditioners are more than just a source of comfort—they’re critical for maintaining indoor air quality and regulating temperature, especially in warmer climates or during summer months. Neglecting maintenance or repairs not only shortens the lifespan of your system but can also lead to higher energy bills and unsafe home conditions, such as mold growth or poor air circulation. 

Here’s why regular AC repair in Durham and maintenance should be a priority for any property owner:

• Efficiency: Timely repairs ensure your unit runs at peak efficiency, saving on energy costs. 
• Longevity: Routine maintenance extends the life of your system, delaying the need for costly replacements. 
• Safety: Detecting issues early prevents problems like electrical hazards or refrigerant leaks. 
• Property Value: A well-maintained AC system can increase property value and appeal to potential buyers or tenants. 

Common AC Problems and How to Fix Them 

Not all AC issues require professional help—sometimes, a little troubleshooting can go a long way. Here are some of the most common problems homeowners face with their air-conditioning systems and tips on resolving them. 

1. AC Is Not Cooling Properly 

If your AC is running but your home isn’t cooling down, it might be due to clogged air filters, low refrigerant levels, or dirty evaporator coils. 

Solution: 

• Check and replace dirty air filters.
• Inspect your thermostat settings to make sure they’re correct.
• Have a technician check refrigerant levels and clean coils if necessary. 

2. The Unit Won’t Turn On 

This could indicate a tripped circuit breaker, faulty thermostat, or electrical failure. 

Solution: 

• Reset the circuit breaker. 
• Replace thermostat batteries or check its wiring. 
• If the problem persists, call a professional to inspect the wiring or control board. 

3. Strange Noises from the AC 

Hearing grinding, squealing, or banging noises? These are often caused by loose components, a failing motor, or debris in the unit. 

Solution: 

• Tighten loose screws or panels. 
• Turn off the unit and remove visible obstructions. 
• Hire a technician to replace worn-out parts as needed. 

4. Water Leaks Around the Unit 

Water leaks are usually tied to a clogged drain line or frozen evaporator coil. 

Solution: 

• Clear the drain line by flushing it with vinegar or using a wet/dry vacuum. 
• Ensure proper airflow to avoid freezing coils, which can be addressed by cleaning dirty filters. 

5. High Energy Bills 

If your electric bills are suddenly higher, your AC may be running inefficiently due to age, dirty components, or poorly sealed ducts. 

Solution: 

• Schedule routine maintenance to clean and tune the system. 
• Seal ductwork if you detect leaks. 

When to Call a Professional for AC Repair 

While certain issues can be easily resolved, others require the expertise of a licensed technician. Consider reaching out to a professional if:

• Your AC unit is over 10 years old and constantly breaking down. 
• Strange noises persist despite troubleshooting. 
• There’s a refrigerant leak, which must be handled by certified technicians. 
• Electrical issues like flickering lights or burnt wiring are present. 
• You notice inconsistent cooling across rooms, signaling potential airflow problems. 

Professional technicians are trained to identify underlying issues, provide long-lasting fixes, and ensure your unit adheres to local safety codes. Always choose an experienced and licensed team when dealing with complex AC repairs. 

Top Maintenance Practices to Avoid Frequent Repairs 

Prevention is better than cure, and regular maintenance can help avoid expensive repairs down the line. Here are some of the best practices for homeowners to maintain their AC units:

1. Replace Air Filters Regularly 

Dirty filters block airflow and overwork the system. Replace them every 1–3 months, particularly during peak cooling seasons or if you have pets. 

2. Clean Coils and Fins 

Dust and debris reduce the efficiency of your system and lead to overheating. Use a garden hose or an air compressor to clean fins and heat exchangers carefully. 

3. Schedule Annual Professional Maintenance 

Hire a technician to inspect, clean, and fine-tune your system every year before the summer heat kicks in. 

4. Check Thermostat Settings Regularly 

Invest in a programmable or smart thermostat to optimize cooling based on your daily routine. Avoid overworking the unit by setting an energy-efficient temperature (around 78°F when you’re home). 

5. Inspect and Seal Ductwork 

Leaks in ducts are common and can waste a significant amount of cooled air. Ensure ducts are sealed and insulated to maintain energy efficiency. 

How to Choose the Right AC Repair Service 

With so many options available, it can be challenging to find a trustworthy AC repair service. Here are some tips to help you make the right choice:

• Look for Certification: Ensure technicians are trained and licensed to handle your type of AC unit. 
• Read Reviews: Online reviews and testimonials offer insight into the quality of service. 
• Check for Guarantees: A reputable repair service should back their work with warranties or satisfaction guarantees. 
• Seek Transparent Pricing: Clear estimates with no hidden fees indicate a trustworthy service provider. 

Final Thoughts on AC Repair 

An efficient and well-maintained AC system isn’t just a luxury—it’s a necessity, especially in warmer climates or high-summer periods. Taking proactive steps to address minor issues, perform regular maintenance, and call professionals when needed ensures your cooling system remains reliable and cost-effective. 

If you’re in need of AC repair in Durham, don’t wait until the hottest day of the year to act. Partner with a trusted service provider and keep your system running smoothly, year after year.